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FAQ: publish web service failed with Error 400 (Bad Request) RRS feed

  • General discussion

  • During publishing web service, you may see error message like: Service call failed. Error 400 (Bad Request) when requesting /webservicegroups/xxxx/modelpackages/

    It's probably because that you have too many features in the input/output ports of the web service. You should use project column module to filter out unused features to solve the issue.

    For example, the following sample experiment will cause the error:

    The feature hashing module will generate tons of features and score model will include all of them in output port. You may use a project column to keep only the score and score probability columns as web service output.

    We are going to improve the error message in the future.

    • Changed type neerajkh_MSFT Wednesday, March 11, 2015 9:05 PM This is a information sharing
    Thursday, February 26, 2015 7:35 PM